Okay, let's get this out of the way.
There are two things you need to solve this cypher.
Yes, the keyword is one of them, but you only have 6! combinations (assuming we are seeing one step before the final step of rewriting it once more) which is 720 combination.
These 720 combinations would cover any possible word you could think of, and here is why. The keyword is used only to be put into alphabetical order. (Example: POWERS becomes EOPRSW) This means that several words could give the same result as another word. (Example: WARDEN would become ADENRW, this would give the same result as if the code-word were just FAEBCD)
We can further deduce that the last two rows are in fact the first two letters of code-word since they have more letters in them (example: ZOMBIE becomes BEIOMZ) however, as we learned above that word would be the same as a similarly alphabetized word (Example ZOMBIE is the same as FEACB)
Using this assumption we can reduce the number of possibilities to 2! + 4! because we know there are only 2 possibilities for each of the first two positions and then there are 4 possibilities for each of the remaining 4 positions. This gives us 26 different "words" that could be used as key words.
If the keyword was the only thing we needed then this could be solved in minutes by a person. Let alone by a computer.
However, even if the codeword was ZOMBIES using it in the decoding method of an ADFGX cypher would yield
XF FF FF DG FF FG GA GG FG FA FX DD FF DG GD AX GD FG GF GG FF GX FF GF FD FF FF FX FA DX AX GG GX FF
As you can tell that's not solved. However, each letter pair represents a single letter, that's where the final decoding happens and where the cypher gets it's name
_|A|D|F|G|X|
A|A|B|C|D|E|
D|F|G|H|I|K|
F|L|M|N|O|P|
G|Q|R|S|T|U|
X|V|W|X|Y|Z|
That looks a little complicated but the way it goes is the first letter is XD so you find X down and F across. That letter would be X, if you continue to do this with all of the letters you will get XNNINOQTOLPGNIREROSTNUNSMNNPLKETUN.
Now as you can tell that doesn't look solved either. So what gives? The answer lies in the second level of encryption. X down and F across doesn't always have to be X. It can be any one of 25 letters (J is excluded and I is used for both J and I)
What this means is that there are 25 letters possible for the first spot and 24 for the second (because you can't have repeating letters) and 23 for the third. If you continue this method you have 25! different possible 5x5 squares.
That number is 15,511,210,043,330,985,984,000,000, or 15 septillion (or quadrillion in long scale for you Brits) and that's what makes this cipher so hard to crack. If it were merely guessing the right word we would have been done long ago.
This is of course assuming we are using an ADFGX and not an ADFGVX (which we assume because there are no V's but it doesn't make it impossible) this would give us a 6x6 grid and give us 3.7x10^41 or 37 tredecillion (or septillion in long scale) possible combinations.
So until you figure out this grid then we are a far cry from solving this thing.
Alternatively, if you know for sure that you have the correct keyword you can solve it down into any 5x5 square and solve it cryptoquip style.
For example: THE KING OF TOAST IS AWESOME would become (on my own random square) it would become AGFFFXXFFDDXGAFFXDDGFXXGXXADXFFDDFXXFFAFAAXXFD.
Now if I told you the keyword was ZOMBIE and you take that encryption and decode it with the square I have above (ABCDE...) it would become CVNMTWBXGCXKZCTZKLNZXHN
You then basically guess which letters become which other letters, if I space it out it becomes apparent that C=T V=H N=E and so on:
CVN MTWB XG CXKZC TZ KLNZXHN
THE KING OF TOAST IS AWESOME
However in the case of this cypher we do not know where the space belong, thus making this a very difficult nut to crack.

I've got a method and theory, and I want to know what you think of it.
The Keyword is irrelevant. The gave us our clue on how to solve it by leaving out null letters to even out the columns, therefore we can conclude that they the last two columns should in fact be the first two (with 2 combinations). That leaves us with the remaining 4. This can be arranged in 4! possible ways. (24 combinations) Combine that with the two and we have a possible 48 combinations for this code.
After converting into columns we can use any polybius square (mine is just a-z plain and simple) to convert it into letters.
We can then use generic decryption methods (like the ones grandmas use when solving the crptoquote in the newspaper. Unfortunately we won't have the benefit of spacing.
The only problem with this is that only 1 solution will work and 47 will not that will leave us a lot of time looking for something when there is nothing to be seen.
For example I reorder the original columns from 123456 to 561234 giving me:
GDFFGX
GFGFFA
GFGGDD
FFFFXX
FGFDGF
FGFDGF
FFFDGG
AAFGFG
DXFXFX
GFXFXD
FFFAGG
AF
Using my generic polybius square I got
rnu ssl tgn
nzo mso msn
mta ook pps
xwn ltc
I did my best to decrypt it from here and all I can get is
"to seen chood prepre or cappille buoncy"
or
"nsfee boys sp the the shout tilled as bor"
So I don't think this is the one, but I am determined to keep trying.

It should count as a down and a death, basically. I think as it stands it doesn't count as a death. I also think that it should count as they only got to that round on that game and not throw that game as a non-play, because I believe the system bases your record on your most recent games (allowing people to actually get better if they started off very poorly) So if you quit on round 3 it should count as going down and dying on round 3 in solo.

I just want to start by saying: Yay, look at my proper forum etiquette of not creating a new thread ^-^.
Secondly, I have recent stats of having just obtained the dagger as well as stats of my friends who have daggers. After looking at the stats I cam to the conclusion that the ranking system may not be as broken as we think.
Most people say that it will discourage exploring in the later maps because people will be protecting their K/D. However, I believe that the game factors in more of your recent games than anything.
My initial thought was "if I was really bad when I started, how could I ever get (ranking wise) 'better'"
A bad K/D shouldn't curse you forever and force you to get a new account in order to get a ranking more reflective of your skill.
Over the past few games I've been getting more consistent with my high rounds, however due to my excessive playing I was only able to raise my K/Do from 87.5 to 89.9.(K/De @ 135 to 141)
Now that doesn't seem like a mile stone to me.
However if I factor in the K/Do if the time in between it is 3101 kills, 18 downs and 7 deaths. For a K/Do and K/De of 172 and 443. Now that to me seems like a marked improvement. If you factor in even more of my recent games I believe I may be lower than that but still above a certain milestone (100? 150?)
To add to this, I have a friend with a 34 K/Do with a dagger. Stats are here: https://docs.google.com/spreadsheet/ccc ... Dlka19CM1E

To give the effect that the Earth was hit by missiles and well you know it's suffering through allot right now.
The Earth shakes at random points of the game, it also shakes when you're selecting a game mode/"map". I doubt it has anything to do with the Easter Egg.
I just assumed it was to make it a little harder to survive in there. I know that if I were 4 of me, I would have been able to survive with no doors open on kino, simply because I can build barriers and knife at the same time. The same could happen at the depot except when the earth shakes a hole forms in the roof allowing for a 5th entrance. Meaning you can survive there with ease and little spawns until that point, allowing for you to gain points. Also, what happens if you kill all 6 of the round 1 zombies, but don't touch the 4 "round 0" zombies(as i call them)

I need an opinion on something now. We all know the power poster with pylon on it and the 3.0, but did anyone look at the super low res numbers on the bottom. It seems to be a phone number. However, what I would assume to be the area code is 757. There are to problems I have with this. The first being that that area code belongs to south eastern Virginia, specifically; Hampton Roads. Yet, upon further research, Hampton Roads has heavy military, commercial and scientific implication as it is used by all branches of the US military as well as NASA. (click http://en.wikipedia.org/wiki/Hampton_Roads for more info)
My second issue with declaring it a 757 area code is that the area code did not exist until 1996. I know there are some theories that we are not in fact in the 60's and I'm more and more inclined to believe it.
If you have any other ideas as to what those numbers could be and mean let me know. I will not add it to the list because it is only speculation and you clearly cannot make out the last numbers of the string.

I want to get every little bit of information down in one place and to start I want to explore all of the numbers in green run. I will update this post with all of the numbers submitted. They can be numbers in and of themselves, as in the addresses of a building, or as part of a larger phrase, as in "2" in "Day x /2 me"
Submit your numbers in this fashion.
Number: 2
Location: Day x /2 me, overhead road sign between diner and bus depot
I will add the numbers when they are confirmed with a picture, by myself (as I play regularly), or when posted by more than one person.
Number: 250,000 and 225,000
Significance: Max amount of money stored in the bank and total after withdrawal fees.
Number: 0246378 and 43006
Location: Keypad in pack-a-punch room top and bottom respectively
Number: 22708
Location: In the power station next to the switch
Number: 24
Location: Diner, as part of the open 24 hour sign.
Number: 4
Location: Diner, reverse side of number 24, blacked out letters leave "Now Die" and "On 4 U"

I think we are getting a little off topic here. No one is saying that the game is realistic. There are Zombies so that throws any realism out the window immediately. What the OP was question was the rules already established by the zombie universe.
I believe InfestLithium has the best answer in that it is simply a layer of lava and not the wall of fire used in the traps.